At Lawton we supply kitemarked degreased copper tubes to BS EN 13348, meaning all Lawton products are regularly audited by the British Standards Institute. Straight length copper tube is available in 3m & 6m lengths. Diameters range from 12mm to 219mm, for large hospital projects. We have stocks of Lawton largest diameter tubes available for immediate despatch.
All Lawton medical tube complies with the latest National Heath Service (NHS) HTM 02-01 spec.
Specific Benefits Include:
Our commitment to product quality meant we were the first British company to be awarded the kitemark license to supply copper tubing to this standard.
Material Analysis:
Cleanliness:
We take the cleanliness of our medical gas copper tube very seriously. We achieved EN 13348 (medical gas) standard over 10 years ago and were the first British company to be awarded the kitemark licence to supply to licence to supply to this standard.
Maximum total carbon content 0.20mg/dm².
Each tube individually end-capped, tube bundles polythene wrapped* and sealed.
Marking:
Sizes 12mm-108mm copper tubes are stamped and inkjet market with:
Sizes above 108mm (133mm/159mm/219mm) are made to EN 1057 and cleaned to EN 13348
Medical Instructions for use:
| O.D.(mm) | Wall (mm) | Temper | Max Working Pressure bar up to 65oC | Thickness Tolerance | Diameter Tolerance | |
| Mean | Including Ovality | |||||
| 12 | 0.6 (TX) | Half Hard | 63 | ±10% | ± 0.04mm | ±0.09mm |
| 12 | 0.8 (TY) | Half Hard | 87 | ±10% | ± 0.04mm | ±0.09mm |
| 15 | 0.7 (TX) | Half Hard | 58 | ±10% | ± 0.04mm | ±0.09mm |
| 15 | 1.0 (TY) | Half Hard | 87 | ±13% | ± 0.04mm | ±0.09mm |
| 22 | 0.9 (TX) | Half Hard | 51 | ±10% | ± 0.05mm | ±0.10mm |
| 22 | 1.2 (TY) | Half Hard | 69 | ±15% | ± 0.05mm | ±0.10mm |
| 28 | 0.9 (TX) | Half Hard | 40 | ±10% | ± 0.05mm | ±0.10mm |
| 28 | 1.2 (TY) | Half Hard | 55 | ±15% | ± 0.05mm | ±0.10mm |
| 35 | 1.0 | Hard | 42 | ±15% | ± 0.06mm | ±0.07mm |
| 35 | 1.2 (TX) | Half Hard | 42 | ±10% | ± 0.06mm | ±0.11mm |
| 35 | 1.5 (TY) | Hard | 64 | ±10% | ± 0.06mm | ±0.07mm |
| 42 | 1.0 | Hard | 35 | ±15% | ± 0.06mm | ±0.07mm |
| 42 | 1.2 (TX) | Half Hard | 35 | ±10% | ± 0.06mm | ±0.11mm |
| 42 | 1.5 (TY) | Hard | 53 | ±10% | ± 0.06mm | ±0.07mm |
| 54 | 1.0 | Hard | 27 | ±15% | ± 0.06mm | ±0.07mm |
| 54 | 1.2 (TX) | Half Hard | 27 | ±10% | ± 0.06mm | ±0.11mm |
| 54 | 2.0 (TY) | Hard | 55 | ±10% | ± 0.06mm | ±0.07mm |
| 66.7 | 1.2 (TX) | Hard | 26 | ±15% | ± 0.07mm | ±0.10mm |
| 66.7 | 2.0 (TY) | Hard | 45 | ±15% | ± 0.07mm | ±0.10mm |
| 76.1 | 1.5 (TX) | Hard | 29 | ±15% | ± 0.07mm | ±0.10mm |
| 76.1 | 2.0 (TY) | Hard | 39 | ±15% | ± 0.07mm | ±0.10mm |
| 108 | 1.5 (TX) | Hard | 20 | ±15% | ± 0.07mm | ±0.20mm |
| 108 | 2.5 (TY) | Hard | 34 | ±15% | ± 0.07mm | ±0.20mm |
| 133 | 1.5 (TX) | Hard | 16 | ±15% | ± 0.20mm | ±0.70mm |
| 159 | 2.0 (TX) | Hard | 18 | ±15% | ± 0.20mm | ±0.70mm |
| 219 | 3.0 (TX) | Hard | 20 | ±15% | ± 0.60mm | ±1.50mm |
| Material Temper EN 1173 | Tensile Strength min. (N/mm2) | Elongation min. (%) | Hardness (Indicative) HV5 VPN |
| R250 (Half Hard) | 250 | 30 (TX) 20 (TY) | 75-100 |
| R290 (Hard) | 290 | 3 | Over 100 |
Copper has a coefficient of linear expansion of 17 x 10-6oC. for example, a 10 metre length of copper tube carrying hot water at 600C will increase in length by almost 7mm when heated from 200C.
Assuming that temperature cycling of the system is 200C, there will be a continuous cycle of expansion and contration of 3.4mm.
refer to table below.
| Temperature Change | Tube Length | |||||||||
| 3m | 4m | 5m | 6m | 7m | 8m | 9m | 10m | 12m | 25m | |
| 10° | 0.5mm | 0.7mm | 0.9mm | 1.0mm | 1.2mm | 1.4mm | 1.5mm | 1.7mm | 2.0mm | 4.3mm |
| 20° | 1.0mm | 1.4mm | 1.7mm | 2.0mm | 2.4mm | 2.7mm | 3.0mm | 3.4mm | 4.0mm | 8.5mm |
| 30° | 1.5mm | 2.0mm | 2.6mm | 3.1mm | 3.6mm | 4.1mm | 4.6mm | 5.1mm | 6.1mm | 13.0mm |
| 40° | 2.0mm | 2.7mm | 3.4mm | 4.1mm | 4.8mm | 5.4mm | 6.1mm | 6.8mm | 8.2mm | 17.0mm |
| 50° | 2.6mm | 3.4mm | 4.3mm | 5.1mm | 6.0mm | 6.8mm | 7.7mm | 8.5mm | 10.2mm | 21.0mm |
| 60° | 3.1mm | 4.1mm | 5.1mm | 6.1mm | 7.1mm | 8.2mm | 9.2mm | 10.2mm | 12.2mm | 26.0mm |
| 70° | 3.6mm | 4.8mm | 6.0mm | 7.1mm | 8.3mm | 9.5mm | 10.7mm | 11.9mm | 14.3mm | 30.0mm |
| 80° | 4.1mm | 5.4mm | 6.8mm | 8.2mm | 9.5mm | 10.9mm | 12.2mm | 13.6mm | 16.3mm | 34.0mm |
| 90° | 4.6mm | 6.1mm | 7.7mm | 9.2mm | 10.7mm | 12.2mm | 13.8mm | 15.3mm | 18.4mm | 38.0mm |
| 100° | 5.1mm | 6.8mm | 8.5mm | 10.2mm | 11.9mm | 13.6mm | 15.3mm | 17.0mm | 20.4mm | 43.0mm |
| 150° | 7.65mm | 10.2mm | 12.75mm | 15.3mm | 17.85mm | 20.4mm | 22.95mm | 25.5mm | 30.6mm | 63.75mm |
| 200° | 10.2mm | 13.6mm | 17.0mm | 20.4mm | 23.8mm | 27.2mm | 30.6mm | 34.0mm | 40.8mm | 85.0mm |
Medical Grade Degreased Copper Tube
